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Linux Analysis Report
arm.elf

Overview

General Information

Sample name:	arm.elf
Analysis ID:	1644227
MD5:	b25d6e9d8e39e0164f73599cb09d4331
SHA1:	043a298f312d9ac120f2dd5d089257376c734d3f
SHA256:	35daf471b64338b278a7c66df2883c281a62c830c583152dc022671dbe00cd1c
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	56
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

ELF contains segments with high entropy indicating compressed/encrypted content

Executes the "rm" command used to delete files or directories

Sample contains only a LOAD segment without any section mappings

Uses the "uname" system call to query kernel version information (possible evasion)

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1644227
Start date and time:	2025-03-20 13:18:06 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 25s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Sample name:	arm.elf
Detection:	MAL
Classification:	mal56.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/arm.elf
PID:	5516
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

arm.elf (PID: 5516, Parent: 5442, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.elf

dash New Fork (PID: 5609, Parent: 3670)

rm (PID: 5609, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.cSZWGhRYLU /tmp/tmp.6A2SE1Tptv /tmp/tmp.h3Zj0ugABj

dash New Fork (PID: 5610, Parent: 3670)

cat (PID: 5610, Parent: 3670, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.cSZWGhRYLU

dash New Fork (PID: 5611, Parent: 3670)

head (PID: 5611, Parent: 3670, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5612, Parent: 3670)

tr (PID: 5612, Parent: 3670, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5613, Parent: 3670)

cut (PID: 5613, Parent: 3670, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5614, Parent: 3670)

cat (PID: 5614, Parent: 3670, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.cSZWGhRYLU

dash New Fork (PID: 5615, Parent: 3670)

head (PID: 5615, Parent: 3670, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5616, Parent: 3670)

tr (PID: 5616, Parent: 3670, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5617, Parent: 3670)

cut (PID: 5617, Parent: 3670, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5618, Parent: 3670)

rm (PID: 5618, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.cSZWGhRYLU /tmp/tmp.6A2SE1Tptv /tmp/tmp.h3Zj0ugABj

cleanup

HTTP traffic detected: GET / HTTP/1.1User-Agent: wget/1.20.3-1ubuntu1 Ubuntu/20.04.2/LTS GNU/Linux/5.4.0-72-generic/x86_64 Intel(R)/Xeon(R)/Silver/4210/CPU/@/2.20GHz cloud_id/noneAccept: */*Accept-Encoding: identityHost: motd.ubuntu.comConnection: Keep-Alive

Source: global traffic

DNS traffic detected: DNS query: daisy.ubuntu.com

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 36188
Source: unknown	Network traffic detected: HTTP traffic on port 44522 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 36188 -> 443

Source: LOAD without section mappings

Program segment: 0x8000

Source: classification engine

Classification label: mal56.linELF@0/0@2/0

Source: /usr/bin/dash (PID: 5609)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.cSZWGhRYLU /tmp/tmp.6A2SE1Tptv /tmp/tmp.h3Zj0ugABj			Jump to behavior
Source: /usr/bin/dash (PID: 5618)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.cSZWGhRYLU /tmp/tmp.6A2SE1Tptv /tmp/tmp.h3Zj0ugABj			Jump to behavior

Source: arm.elf

Submission file: segment LOAD with 7.9648 entropy (max. 8.0)

Source: /tmp/arm.elf (PID: 5516)

Queries kernel information via 'uname':

Jump to behavior

Source: arm.elf, 5516.1.0000556771899000.00005567719c7000.rw-.sdmp	Binary or memory string: qgU!/etc/qemu-binfmt/arm
Source: arm.elf, 5516.1.0000556771899000.00005567719c7000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.elf, 5516.1.00007ffc9936e000.00007ffc9938f000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm.elf, 5516.1.00007ffc9936e000.00007ffc9938f000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm.elf, 5516.1.00007ffc9936e000.00007ffc9938f000.rw-.sdmp	Binary or memory string: Ex86_64/usr/bin/qemu-arm/tmp/arm.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/arm.elf

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	1 Obfuscated Files or Information	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	1 File Deletion	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	2 Non-Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	3 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	1 Ingress Tool Transfer	Traffic Duplication	Data Destruction

Malware Configuration

⊘No configs have been found

Behavior Graph

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Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Screenshots

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Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
arm.elf	52%	Virustotal		Browse
arm.elf	44%	ReversingLabs	Linux.Trojan.Mirai
arm.elf	100%	Avira	EXP/ELF.Agent.F.14

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false		high

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
https://motd.ubuntu.com/	false		high

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	Flag	ASN	ASN Name	Malicious
34.254.182.186	unknown	United States		16509	AMAZON-02US	false
34.243.160.129	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
34.254.182.186	bot.arm6.elf	Get hash	malicious	Unknown	Browse
	hiss.arm7.elf	Get hash	malicious	Unknown	Browse
	resgod.mpsl.elf	Get hash	malicious	Mirai	Browse
	resgod.arm7.elf	Get hash	malicious	Mirai	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	x-8.6-.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	8893Xmi39S.arm5.elf	Get hash	malicious	Unknown	Browse
	sparc.nn.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	hidakibest.ppc.elf	Get hash	malicious	Gafgyt, Mirai	Browse
34.243.160.129	main_x86.elf	Get hash	malicious	Mirai	Browse
	hiss.arm7.elf	Get hash	malicious	Unknown	Browse
	gigab.i686.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	hide.spc.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm7.nn.elf	Get hash	malicious	Mirai	Browse
	m-p.s-l.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	rtk.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	zte.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	root.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	.5r3fqt67ew531has4231.sh4.elf	Get hash	malicious	Gafgyt, Mirai, Moobot, Okiru	Browse	162.213.35.24
	yakuza.ppc.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	yakuza.arm6.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	yakuza.arm4.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	yakuza.mips.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	yakuza.i586.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	root.elf	Get hash	malicious	Unknown	Browse	13.61.153.130
	smips.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	psmpsl.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	psmips.elf	Get hash	malicious	Unknown	Browse	54.217.10.153
	yakuza.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	54.171.230.55
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	54.217.10.153
	https://sharepointsync.zoholandingpage.com/vandpsolutions.com?PO60267SP-20-2025	Get hash	malicious	HTMLPhisher	Browse	13.249.91.126
	yakuza.sh4.elf	Get hash	malicious	Gafgyt, Mirai	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	54.255.164.76
	.5r3fqt67ew531has4231.mpsl.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
AMAZON-02US	root.elf	Get hash	malicious	Unknown	Browse	13.61.153.130
	smips.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	psmpsl.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	psmips.elf	Get hash	malicious	Unknown	Browse	54.217.10.153
	yakuza.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	54.171.230.55
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	54.217.10.153
	https://sharepointsync.zoholandingpage.com/vandpsolutions.com?PO60267SP-20-2025	Get hash	malicious	HTMLPhisher	Browse	13.249.91.126
	yakuza.sh4.elf	Get hash	malicious	Gafgyt, Mirai	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	54.255.164.76
	.5r3fqt67ew531has4231.mpsl.elf	Get hash	malicious	Unknown	Browse	34.249.145.219

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Source: arm.elf	Virustotal: Detection: 51%			Perma Link
Source: arm.elf	ReversingLabs: Detection: 44%

Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129
Source: unknown	TCP traffic detected without corresponding DNS query: 34.243.160.129

File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, no section header
Entropy (8bit):	7.962547989725935
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm.elf
File size:	36'820 bytes
MD5:	b25d6e9d8e39e0164f73599cb09d4331
SHA1:	043a298f312d9ac120f2dd5d089257376c734d3f
SHA256:	35daf471b64338b278a7c66df2883c281a62c830c583152dc022671dbe00cd1c
SHA512:	3e5de5fdca5efc52a2a6e3c9f06df382c02709fe552f295ca7c61dec29f94b7ca1187ef15f5155c351602a8ef1ca2e6d9007cf4af1f2a21f1d3dcf47a6a887f9
SSDEEP:	768:cykAbMOvH+1gl2LLOvO86SodP8r/r8HqcPjJdb3Uk:cykmygl2uvO86vdPEr8HXF
TLSH:	9BF2E120A749A922DFF0B93BF9E648D39E271DB1D4A733759738C339AAC48412670D4D
File Content Preview:	.ELF...a..........(.........4...........4. ...(.........................................................`...........Q.td..............................q.YTS.D.......P,..P,......T..........?.E.h;.}...^..........f3..sj.l..0z.$..G.sB..z...<.P..`$.../.......-.

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0xfdb4
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	0
Section Header Size:	40
Number of Section Headers:	0
Header String Table Index:	0

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align
LOAD	0x0	0x8000	0x8000	0x8ee8	0x8ee8	7.9648	0x5	R E	0x8000
LOAD	0x0	0x18000	0x18000	0x0	0x10f60	0.0000	0x6	RW	0x8000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 20, 2025 13:18:49.801846027 CET	44522	443	192.168.2.15	34.254.182.186
Mar 20, 2025 13:19:18.227910042 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:18.227966070 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:18.228086948 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:18.229990959 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:18.230005980 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:53.098510027 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:53.098702908 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:53.099225044 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:53.099235058 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:53.101311922 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:53.101377964 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:53.103441954 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:53.103534937 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:53.103575945 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:53.103583097 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:53.103616953 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:54.054986000 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:54.055128098 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:54.055176020 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:54.055228949 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:54.055242062 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:54.055294037 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:54.055325985 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:54.055490017 CET	36188	443	192.168.2.15	34.243.160.129
Mar 20, 2025 13:19:54.055506945 CET	443	36188	34.243.160.129	192.168.2.15
Mar 20, 2025 13:19:54.055547953 CET	36188	443	192.168.2.15	34.243.160.129

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 20, 2025 13:18:47.349206924 CET	56256	53	192.168.2.15	8.8.8.8
Mar 20, 2025 13:18:47.349206924 CET	43823	53	192.168.2.15	8.8.8.8
Mar 20, 2025 13:18:47.448504925 CET	53	43823	8.8.8.8	192.168.2.15
Mar 20, 2025 13:18:47.451303005 CET	53	56256	8.8.8.8	192.168.2.15

Timestamp	Bytes transferred	Direction	Data
2025-03-20 12:19:53 UTC	249	OUT	GET / HTTP/1.1 User-Agent: wget/1.20.3-1ubuntu1 Ubuntu/20.04.2/LTS GNU/Linux/5.4.0-72-generic/x86_64 Intel(R)/Xeon(R)/Silver/4210/CPU/@/2.20GHz cloud_id/none Accept: / Accept-Encoding: identity Host: motd.ubuntu.com Connection: Keep-Alive
2025-03-20 12:19:54 UTC	271	IN	HTTP/1.1 200 OK Date: Thu, 20 Mar 2025 12:19:53 GMT Server: Apache/2.4.18 (Ubuntu) Last-Modified: Thu, 20 Mar 2025 12:15:28 GMT ETag: "d8-630c517ecf091" Accept-Ranges: bytes Content-Length: 216 Vary: Accept-Encoding Connection: close Content-Type: text/plain
2025-03-20 12:19:54 UTC	216	IN	Data Raw: 20 2a 20 53 74 72 69 63 74 6c 79 20 63 6f 6e 66 69 6e 65 64 20 4b 75 62 65 72 6e 65 74 65 73 20 6d 61 6b 65 73 20 65 64 67 65 20 61 6e 64 20 49 6f 54 20 73 65 63 75 72 65 2e 20 4c 65 61 72 6e 20 68 6f 77 20 4d 69 63 72 6f 4b 38 73 0a 20 20 20 6a 75 73 74 20 72 61 69 73 65 64 20 74 68 65 20 62 61 72 20 66 6f 72 20 65 61 73 79 2c 20 72 65 73 69 6c 69 65 6e 74 20 61 6e 64 20 73 65 63 75 72 65 20 4b 38 73 20 63 6c 75 73 74 65 72 20 64 65 70 6c 6f 79 6d 65 6e 74 2e 0a 0a 20 20 20 68 74 74 70 73 3a 2f 2f 75 62 75 6e 74 75 2e 63 6f 6d 2f 65 6e 67 61 67 65 2f 73 65 63 75 72 65 2d 6b 75 62 65 72 6e 65 74 65 73 2d 61 74 2d 74 68 65 2d 65 64 67 65 0a Data Ascii: * Strictly confined Kubernetes makes edge and IoT secure. Learn how MicroK8s just raised the bar for easy, resilient and secure K8s cluster deployment. https://ubuntu.com/engage/secure-kubernetes-at-the-edge

Start time (UTC):	12:18:44
Start date (UTC):	20/03/2025
Path:	/tmp/arm.elf
Arguments:	/tmp/arm.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	12:19:53
Start date (UTC):	20/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may transfer tools or other files from an external system into a compromised environment. Tools or files may be copied from an external adversary-controlled system to the victim network through the command and control channel or through alternate protocols such as ftp . Once present, adversaries may also transfer/spread tools between victim devices within a compromised environment (i.e. Lateral Tool Transfer ).
Tactics:	Command and Control
Data Sources:	Command: Command Execution, File: File Creation, Network Traffic: Network Connection Creation, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

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Linux Analysis Report arm.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

HTTP Request Dependency Graph

HTTPS Proxied Packets

System Behavior

Analysis Process: arm.elf PID: 5516, Parent PID: 5442

General

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 5609, Parent PID: 3670

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5609, Parent PID: 3670

General

File Activities

Linux Analysis Report
arm.elf